CA2502695C - Ratcheting torque-angle wrench and method - Google Patents
Ratcheting torque-angle wrench and method Download PDFInfo
- Publication number
- CA2502695C CA2502695C CA2502695A CA2502695A CA2502695C CA 2502695 C CA2502695 C CA 2502695C CA 2502695 A CA2502695 A CA 2502695A CA 2502695 A CA2502695 A CA 2502695A CA 2502695 C CA2502695 C CA 2502695C
- Authority
- CA
- Canada
- Prior art keywords
- torque
- angle
- signal
- wrench
- circuitry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title description 4
- 238000005259 measurement Methods 0.000 description 8
- 230000006870 function Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1425—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
A torque-angle wrench (10) has a torque preset alert circuit (28) which provides a first signal when a predetermined torque level is reached, an angle sensing circuitry (22, 23) providing a second signal corresponding to angular rotation, output circuitry (24, 25) responsive to the second signal for providing an indication of angular rotation, and switch circuitry (27) for preventing the second signal from reaching the output circuitry until the occurrence of the first signal.
Description
RATCHETING TORQUE-ANGLE WRENCH AND METHOD
Related Application This application claims the benefit of the filing date of copending U.S.
Provisional Application No. 60/418,880, filed October 16, 2002 and entitled "Ratcheting Torque-Angle Wrench."
Background This application relates generally to the field of torque angle wrenches and, more particularly, to a torque-angle wrench including a ratchet drive.
A torque wrench measures the torque applied to a fastener as an indication of the joining force or load. However, torque is considerably influenced by friction forces, the condition of the fasteners, the amount, if any, of lubrication present, as well as by other factors. Accordingly, the reliability of a torque measurement as an indication of desired load is significantly variable. For this reason, a torque-angle fastener installation process, rather than torque measurement alone, is recommended in situations where tightening to recommended specifications is critical.
In a torque-angle fastener installation, a fastener is first tightened to a desired torque using a torque wrench, and is then rotated through a predetermined additional angle of rotation. There are various wrenching tools available which meter angular rotation. Such a wrench, which utilizes a piezoelectric gyroscopic element to measure rotation of the fastener during a torquing operation, is disclosed in U.S. patent no. 5,589,644, which discloses a wrench with a fixed drive head. In the use of that wrench, angle measurement is initiated at a predetermined torque level, the torque-measuring and angle measuring phases of the operation all occurring during a single continuous stroke of the wrench.
However, in many applications, such as where there is limited space for rotational movement of the wrench, the use of a ratchet drive on an angle-measuring wrench is desired. With such a ratchet drive, as is well known, the- wrench is oscillated back and forth between torque-applying and ratcheting directions.
The use of such a ratchet drive introduces error in the angle measurement because of lost motion between ratchet mechanism teeth. For example, a ratchet mechanism may feature a ratchet gear with 36 teeth. Thus, when rotating the wrench in the ratcheting direction, the angular distance between teeth is 10 degrees. Accordingly, the amount of angular rotation "lost motion" of the wrench in the torquing direction could be anywhere between zero and ten degrees before torque is actually applied to the fastener.
Similarly, any looseness between the wrench and the fastener, such as through the use of a socket tool, would introduce additional lost motion. Also, the use of common tools, such as extensions and/or universal drives, would add to the stack-up of lost motion before actually applying torque to the fastener.
Accordingly, in order to accurately, use a ratchet drive with an angle-measuring wrench, it is necessary to account for or ignore the lost motion that may be introduced each time the wrench is rotated in the ratcheting direction.
Summary This application describes a ratcheting angle-measuring wrench which avoids the disadvantages of prior wrenches while affording additional operating and structural advantages.
Related Application This application claims the benefit of the filing date of copending U.S.
Provisional Application No. 60/418,880, filed October 16, 2002 and entitled "Ratcheting Torque-Angle Wrench."
Background This application relates generally to the field of torque angle wrenches and, more particularly, to a torque-angle wrench including a ratchet drive.
A torque wrench measures the torque applied to a fastener as an indication of the joining force or load. However, torque is considerably influenced by friction forces, the condition of the fasteners, the amount, if any, of lubrication present, as well as by other factors. Accordingly, the reliability of a torque measurement as an indication of desired load is significantly variable. For this reason, a torque-angle fastener installation process, rather than torque measurement alone, is recommended in situations where tightening to recommended specifications is critical.
In a torque-angle fastener installation, a fastener is first tightened to a desired torque using a torque wrench, and is then rotated through a predetermined additional angle of rotation. There are various wrenching tools available which meter angular rotation. Such a wrench, which utilizes a piezoelectric gyroscopic element to measure rotation of the fastener during a torquing operation, is disclosed in U.S. patent no. 5,589,644, which discloses a wrench with a fixed drive head. In the use of that wrench, angle measurement is initiated at a predetermined torque level, the torque-measuring and angle measuring phases of the operation all occurring during a single continuous stroke of the wrench.
However, in many applications, such as where there is limited space for rotational movement of the wrench, the use of a ratchet drive on an angle-measuring wrench is desired. With such a ratchet drive, as is well known, the- wrench is oscillated back and forth between torque-applying and ratcheting directions.
The use of such a ratchet drive introduces error in the angle measurement because of lost motion between ratchet mechanism teeth. For example, a ratchet mechanism may feature a ratchet gear with 36 teeth. Thus, when rotating the wrench in the ratcheting direction, the angular distance between teeth is 10 degrees. Accordingly, the amount of angular rotation "lost motion" of the wrench in the torquing direction could be anywhere between zero and ten degrees before torque is actually applied to the fastener.
Similarly, any looseness between the wrench and the fastener, such as through the use of a socket tool, would introduce additional lost motion. Also, the use of common tools, such as extensions and/or universal drives, would add to the stack-up of lost motion before actually applying torque to the fastener.
Accordingly, in order to accurately, use a ratchet drive with an angle-measuring wrench, it is necessary to account for or ignore the lost motion that may be introduced each time the wrench is rotated in the ratcheting direction.
Summary This application describes a ratcheting angle-measuring wrench which avoids the disadvantages of prior wrenches while affording additional operating and structural advantages.
An aspect is the provision of an angle-measuring wrench which ignores non-torque-applying movements of the wrench.
Another aspect is the provision of angle-measuring wrench which automatically commences angle measurement at a predetermined torque level.
Yet another aspect is the provision of a torque and angle measuring wrench, wherein the angle-measuring function is disabled until achievement of a predetermined torque.
There is provided a torque-angle wrench comprising: a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert circuit carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing circuitry carried by the lever arm and providing a second signal corresponding to angular rotation of the lever arm, output circuitry responsive to the second signal for providing an indication of angular rotation, and switch circuitry coupled to the torque preset alert circuit and to. the angle sensing circuitry and to the output circuitry for preventing the second signal from reaching the output circuitry until the occurrence of the first signal.
There is also provided a method of operating a torque-angle wrench which can perform an angle-measuring function, the method comprising: measuring torque applied by the wrench, detecting when measured torque reaches a predetermined torque level, and preventing operation of the angle-measuring function until the predetermined torque level is reached.
Brief Description of the Drawings For the purpose of facilitating an understanding of the subject matter sought to be protected, there are illustrated in the accompanying drawings embodiments thereof, from an inspection of which, when considered in connection with the following description, the subject matter sought to be protected, its construction and operation, and many of its advantages should be readily understood and appreciated.
FIG. 1 is a perspective view of a ratcheting torque-angle wrench;
FIG. 2 is a partially schematic and partially functional block diagram of electronic circuits and components of the torque-angle wrench of FIG. 1;
FIG. 3 is a functional block diagrammatic view of an alternative form of the circuitry for the wrench in FIG. 1; and FIG. 4 is a flow chart of a software program usable in operating the circuitry of FIG. 3.
Detailed Description Referring to FIG. 1, there is illustrated a digital torque angle wrench 10 having an elongated shaft 11 provided with a handle portion 12 at one end thereof and provided at the other end thereof with a workpiece-engaging reversible ratchet head 15 connected to the adjacent end of the shaft 11.
Referring also to FIG. 2, the shaft 11 carries an electronics housing 20 which houses angle integration logic circuitry 21, which may be substantially the same as that disclosed in the aforementioned U.S. patent no. 5,589,644, whereby only so much thereof as is necessary for an understanding of the present improvements is set forth in FIG. 2. The circuitry 21 has angle sensing circuitry including signal processing circuitry 22, which may include a level shifter and a voltage-to-frequency converter, and a piezoelectric angle sensor 23 with an output coupled to the signal processing circuitry 22. The circuitry 21 further includes output circuitry, which may include a digital counter 24 and a suitable display 25 coupled to the output of the counter 24.
The output of the voltage-to-frequency converter (not shown) in the signal processing circuitry 22 is coupled through a resister R9 to the base of an inverter transistor Q1, the emitter of which is grounded, and the collector of which is coupled through a resister R11 to the digital counter 23. The resistors R9 and Rl 1 and the transistor Q1 5 may form part of the angle sensing circuitry. The collector of the transistor Q 1 is also coupled to one input of switch circuitry in the form of an AND gate 27, the output of which is coupled to the digital counter 23. The other input of the AND gate 27 is connected to the output of a torque preset alert circuit 28, which may include a torque sensing device and a comparator which compares the output of the torque sensing device with a preset torque level to generate an output signal to the AND gate 27 when the measured torque equals or exceeds the preset torque level.
When the output of the torque preset alert circuit 28 is present at the input of the AND gate 27, the gate is enabled to pass the output of the transistor Q1, which is.
an inverted series of narrow pulses from the voltage-to-frequency converter, the number of pulses being proportional to the angle sensed by the sensor 23. The digital counter 23 then accumulates these pulses to complete the angle measurement function, the associated display 24 providing an angle display indicative of degrees of rotation, and visually notifying the operator when a specified angle for the particular fastener assembly is reached.
It will be appreciated that the circuitry 21 illustrated in FIG. 2 is substantially identical to that disclosed in the aforementioned U.S. patent no. 5,589,644, with the exception that the collector of the transistor Q 1 is connected through the gate 27, instead of directly, to the digital counter 23, and the enable switch for the digital counter has been eliminated. Thus, instead of switching the digital counter 23 from a disabled to an enabled condition, that counter is always enabled, but the output pulses from the transistor Q1 are blocked therefrom by the gate 27 until the predetermined torque level is reached. Thus, any lost motion resulting from ratcheting action has no effect, because it is ignored by the circuitry 21, which does not permit angle measurement until torque of at least the predetermined level is applied.
While the forgoing description is in the context of a discrete component circuit like that described in the aforementioned patent no. 5,589,644, it will be appreciated that the functions thereof could also be effected in software, using a suitable processor operating under stored program control. Thus, for example, there is illustrated in FIG
3 an alternative circuitry 30 including a processor 31 connected to the output of a piezoelectric angle sensor 32, like that described in the `644 patent, and also connected to the output of a suitable torque sensor 33. The processor 31 is coupled to a suitable memory 34, which may contain the program for the processor, and is also coupled to a suitable display device 35.
Referring to FIG. 4, there is illustrated a program 40 for operating the circuitry of FIG. 3. In operation, after initialization at 41, the processor determines at 42 if the torque sensed by the sensor 33 equals a predetermined torque level Tp and then, at 43, initiates an angle measurement utilizing the output of the angle sensor 32.
The processor then determines at 44 when the measured angle equals a predetermined angle Ap and then, at 45, activates a suitable display indication.
The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only and not as a limitation. While particular embodiments have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made without departing from the broader aspects of applicants' contribution. The actual scope of the protection sought is intended to be defined in the following claims when viewed in their proper perspective based on the prior art.
Another aspect is the provision of angle-measuring wrench which automatically commences angle measurement at a predetermined torque level.
Yet another aspect is the provision of a torque and angle measuring wrench, wherein the angle-measuring function is disabled until achievement of a predetermined torque.
There is provided a torque-angle wrench comprising: a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert circuit carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing circuitry carried by the lever arm and providing a second signal corresponding to angular rotation of the lever arm, output circuitry responsive to the second signal for providing an indication of angular rotation, and switch circuitry coupled to the torque preset alert circuit and to. the angle sensing circuitry and to the output circuitry for preventing the second signal from reaching the output circuitry until the occurrence of the first signal.
There is also provided a method of operating a torque-angle wrench which can perform an angle-measuring function, the method comprising: measuring torque applied by the wrench, detecting when measured torque reaches a predetermined torque level, and preventing operation of the angle-measuring function until the predetermined torque level is reached.
Brief Description of the Drawings For the purpose of facilitating an understanding of the subject matter sought to be protected, there are illustrated in the accompanying drawings embodiments thereof, from an inspection of which, when considered in connection with the following description, the subject matter sought to be protected, its construction and operation, and many of its advantages should be readily understood and appreciated.
FIG. 1 is a perspective view of a ratcheting torque-angle wrench;
FIG. 2 is a partially schematic and partially functional block diagram of electronic circuits and components of the torque-angle wrench of FIG. 1;
FIG. 3 is a functional block diagrammatic view of an alternative form of the circuitry for the wrench in FIG. 1; and FIG. 4 is a flow chart of a software program usable in operating the circuitry of FIG. 3.
Detailed Description Referring to FIG. 1, there is illustrated a digital torque angle wrench 10 having an elongated shaft 11 provided with a handle portion 12 at one end thereof and provided at the other end thereof with a workpiece-engaging reversible ratchet head 15 connected to the adjacent end of the shaft 11.
Referring also to FIG. 2, the shaft 11 carries an electronics housing 20 which houses angle integration logic circuitry 21, which may be substantially the same as that disclosed in the aforementioned U.S. patent no. 5,589,644, whereby only so much thereof as is necessary for an understanding of the present improvements is set forth in FIG. 2. The circuitry 21 has angle sensing circuitry including signal processing circuitry 22, which may include a level shifter and a voltage-to-frequency converter, and a piezoelectric angle sensor 23 with an output coupled to the signal processing circuitry 22. The circuitry 21 further includes output circuitry, which may include a digital counter 24 and a suitable display 25 coupled to the output of the counter 24.
The output of the voltage-to-frequency converter (not shown) in the signal processing circuitry 22 is coupled through a resister R9 to the base of an inverter transistor Q1, the emitter of which is grounded, and the collector of which is coupled through a resister R11 to the digital counter 23. The resistors R9 and Rl 1 and the transistor Q1 5 may form part of the angle sensing circuitry. The collector of the transistor Q 1 is also coupled to one input of switch circuitry in the form of an AND gate 27, the output of which is coupled to the digital counter 23. The other input of the AND gate 27 is connected to the output of a torque preset alert circuit 28, which may include a torque sensing device and a comparator which compares the output of the torque sensing device with a preset torque level to generate an output signal to the AND gate 27 when the measured torque equals or exceeds the preset torque level.
When the output of the torque preset alert circuit 28 is present at the input of the AND gate 27, the gate is enabled to pass the output of the transistor Q1, which is.
an inverted series of narrow pulses from the voltage-to-frequency converter, the number of pulses being proportional to the angle sensed by the sensor 23. The digital counter 23 then accumulates these pulses to complete the angle measurement function, the associated display 24 providing an angle display indicative of degrees of rotation, and visually notifying the operator when a specified angle for the particular fastener assembly is reached.
It will be appreciated that the circuitry 21 illustrated in FIG. 2 is substantially identical to that disclosed in the aforementioned U.S. patent no. 5,589,644, with the exception that the collector of the transistor Q 1 is connected through the gate 27, instead of directly, to the digital counter 23, and the enable switch for the digital counter has been eliminated. Thus, instead of switching the digital counter 23 from a disabled to an enabled condition, that counter is always enabled, but the output pulses from the transistor Q1 are blocked therefrom by the gate 27 until the predetermined torque level is reached. Thus, any lost motion resulting from ratcheting action has no effect, because it is ignored by the circuitry 21, which does not permit angle measurement until torque of at least the predetermined level is applied.
While the forgoing description is in the context of a discrete component circuit like that described in the aforementioned patent no. 5,589,644, it will be appreciated that the functions thereof could also be effected in software, using a suitable processor operating under stored program control. Thus, for example, there is illustrated in FIG
3 an alternative circuitry 30 including a processor 31 connected to the output of a piezoelectric angle sensor 32, like that described in the `644 patent, and also connected to the output of a suitable torque sensor 33. The processor 31 is coupled to a suitable memory 34, which may contain the program for the processor, and is also coupled to a suitable display device 35.
Referring to FIG. 4, there is illustrated a program 40 for operating the circuitry of FIG. 3. In operation, after initialization at 41, the processor determines at 42 if the torque sensed by the sensor 33 equals a predetermined torque level Tp and then, at 43, initiates an angle measurement utilizing the output of the angle sensor 32.
The processor then determines at 44 when the measured angle equals a predetermined angle Ap and then, at 45, activates a suitable display indication.
The matter set forth in the foregoing description and accompanying drawings is offered by way of illustration only and not as a limitation. While particular embodiments have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made without departing from the broader aspects of applicants' contribution. The actual scope of the protection sought is intended to be defined in the following claims when viewed in their proper perspective based on the prior art.
Claims (10)
1. A torque-angle wrench comprising:
a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert circuit carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing circuitry carried by the lever arm and providing a second signal as a train of pulses corresponding to angular rotation of the lever arm, output circuitry including a pulse counter responsive to the second signal for providing an indication of angular rotation, switch circuitry coupled to the torque preset alert circuit and to the angle sensing circuitry and to the output circuitry for permitting the second signal to reach the output circuitry upon the occurrence of the first signal.
a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert circuit carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing circuitry carried by the lever arm and providing a second signal as a train of pulses corresponding to angular rotation of the lever arm, output circuitry including a pulse counter responsive to the second signal for providing an indication of angular rotation, switch circuitry coupled to the torque preset alert circuit and to the angle sensing circuitry and to the output circuitry for permitting the second signal to reach the output circuitry upon the occurrence of the first signal.
2. The torque-angle wrench of claim 1, wherein the head is a ratcheting head.
3. The torque-angle wrench of claim 1, wherein the switch circuitry includes a logic gate.
4. The torque-angle wrench of claim 3, wherein the logic gate is an AND gate having inputs respectively connected to the torque preset alert circuit and the angle sensing circuitry and an output connected to the output circuitry.
5. The torque-angle wrench of claim 1, wherein the angle sensing circuitry includes a piezoelectric angle sensor.
6. The torque-angle wrench of claim 1, wherein the output circuitry includes a display for providing an indication when the angular rotation reaches a predetermined level.
7. A torque-angle wrench comprising:
a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert means carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing means carried by the lever arm and providing a second signal as a train of pulses corresponding to angular rotation of the lever arm, output means including a pulse counter responsive to the second signal for providing an indication of angular rotation, switch means, including a logic gate having an input, coupled to the torque preset alert means and to the angle sensing means and to the output means for permitting the second signal to reach the output means upon the occurrence of the first signal.
a lever arm, a workpiece-engaging head on the lever arm, a torque preset alert means carried by the lever arm and providing a first signal when a predetermined torque level is reached, angle sensing means carried by the lever arm and providing a second signal as a train of pulses corresponding to angular rotation of the lever arm, output means including a pulse counter responsive to the second signal for providing an indication of angular rotation, switch means, including a logic gate having an input, coupled to the torque preset alert means and to the angle sensing means and to the output means for permitting the second signal to reach the output means upon the occurrence of the first signal.
8. The torque-angle wrench of claim 7, wherein the logic gate includes AND
gate means having inputs respectively connected to the torque preset alert means and the angle sensing means and an output connected to the output means.
gate means having inputs respectively connected to the torque preset alert means and the angle sensing means and an output connected to the output means.
9. The torque-angle wrench of claim 7, wherein the output means includes display means for producing a display indicating when the measured angle reaches a predetermined level.
10. The torque-angle wrench of claim 7, wherein the head is a ratcheting head.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41888002P | 2002-10-16 | 2002-10-16 | |
| US60/418,880 | 2002-10-16 | ||
| PCT/US2003/032033 WO2004035267A1 (en) | 2002-10-16 | 2003-10-09 | Ratcheting torque-angle wrench and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2502695A1 CA2502695A1 (en) | 2004-04-29 |
| CA2502695C true CA2502695C (en) | 2012-01-10 |
Family
ID=32107988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2502695A Expired - Lifetime CA2502695C (en) | 2002-10-16 | 2003-10-09 | Ratcheting torque-angle wrench and method |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US7082866B2 (en) |
| AU (1) | AU2003287041A1 (en) |
| CA (1) | CA2502695C (en) |
| GB (1) | GB2409833B (en) |
| TW (1) | TWI321504B (en) |
| WO (1) | WO2004035267A1 (en) |
Families Citing this family (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6965835B2 (en) * | 2001-09-28 | 2005-11-15 | Spx Corporation | Torque angle sensing system and method with angle indication |
| US20060027058A1 (en) * | 2004-08-04 | 2006-02-09 | Chih-Ching Hsien | Electronic torque wrench |
| US7370539B2 (en) * | 2005-07-18 | 2008-05-13 | Easco Hand Tools, Inc. | Electronic torque wrench with a rotatable indexable display device |
| US7331246B2 (en) * | 2005-07-18 | 2008-02-19 | Easco Hand Tools, Inc. | Mechanical torque wrench with an electronic sensor and display device |
| US7562589B2 (en) * | 2005-07-18 | 2009-07-21 | Easco Hand Tools, Inc. | Display device for an electronic torque wrench |
| US7469619B2 (en) * | 2005-07-18 | 2008-12-30 | Easco Hand Tools, Inc. | Electronic torque wrench with a torque compensation device |
| FR2893270B1 (en) * | 2005-11-15 | 2010-01-15 | Renault Georges Ets | DISCONTINUOUS TIGHTENING KEY COMPRISING MEANS FOR MEASURING DYNAMIC PHENOMENA INDUCED BY SAID CLAMPING ON THE CARTER OF THE KEY |
| TWM297820U (en) * | 2006-02-15 | 2006-09-21 | Tranmax Machinery Co Ltd | Open circuit controller of electric ratchet wrench |
| US20080111703A1 (en) * | 2006-11-13 | 2008-05-15 | Chih-Ching Hsieh | Alarm device of twisting bending spanner |
| DE202007002793U1 (en) * | 2007-02-22 | 2007-05-10 | Eduard Wille Gmbh & Co. Kg | Electronic tightening angle measuring device for electronic torque spanner, has rotation angle measuring sensor for measurement of angle, and memory for digital storage of measured angle data, where device is detachably attached at spanner |
| US20080271579A1 (en) * | 2007-05-02 | 2008-11-06 | Chih-Ching Hsieh | Electronic hand tool with at least one button having inclined upper surface |
| TWM325900U (en) * | 2007-05-30 | 2008-01-21 | Boundless Lin Co Ltd | Torsion wrench capable of displaying detected torsion |
| US7721631B2 (en) * | 2007-11-05 | 2010-05-25 | The Boeing Company | Combined wrench and marking system |
| IT1391249B1 (en) * | 2008-09-23 | 2011-12-01 | Atlas Copco Blm Srl | TIGHTENING TOOL WITH PROGRAMMABLE INTERCHANGEABLE INSERTS |
| TWI355991B (en) | 2009-02-06 | 2012-01-11 | Kabo Tool Co | Torque-angle alarm method and wrench thereof |
| GB2467581B (en) * | 2009-02-06 | 2011-10-26 | Kabo Tool Co | Torque-angle alarm method and wrench thereof |
| US20100199782A1 (en) * | 2009-02-06 | 2010-08-12 | Chih-Ching Hsieh | Torque-Angle Alarm Method and Wrench thereof |
| US8844381B2 (en) * | 2009-04-03 | 2014-09-30 | Apex Brands, Inc. | Electronic torque wrench with dual tension beam |
| US8171828B2 (en) * | 2009-12-09 | 2012-05-08 | Digitool Solutions LLC | Electromechanical wrench |
| US8714057B2 (en) * | 2010-01-04 | 2014-05-06 | Apex Brands, Inc. | Ratcheting device for an electronic torque wrench |
| US8327741B2 (en) * | 2010-02-03 | 2012-12-11 | Chihching Hsieh | Torque wrench and method for determining rotational angle of torque wrench |
| DE102010019792A1 (en) * | 2010-05-06 | 2011-11-10 | Lösomat Schraubtechnik Neef Gmbh | Device for generating a torque-precise tightening torque for screw connections and method for calibrating such a device |
| US8347515B2 (en) * | 2010-06-01 | 2013-01-08 | Eclatorq Technology Co., Ltd. | External-coupled electronic angle measurement apparatus |
| US8375555B2 (en) | 2010-06-30 | 2013-02-19 | DePuy Synthes Products, LLC. | Torque-turn orthopaedic bolt tightening method |
| US20120132043A1 (en) * | 2010-11-30 | 2012-05-31 | Xia Chen | Ratcheting mechanical torque wrench with an electronic sensor and display device |
| US8968001B2 (en) * | 2011-03-22 | 2015-03-03 | Arthur Thomas Forrest | Forrest sponge aided sinus membrane lift technique |
| US8918292B2 (en) | 2011-09-23 | 2014-12-23 | Brown Line Metalworks, Llc | Digital angle meter |
| US8886492B2 (en) * | 2011-09-23 | 2014-11-11 | Brown Line Metal Works, Llc | Digital angle meter |
| JP2013146846A (en) * | 2012-01-23 | 2013-08-01 | Max Co Ltd | Rotary tool |
| JP6029890B2 (en) * | 2012-08-17 | 2016-11-24 | 株式会社東日製作所 | Angle wrench and rotation angle measuring device |
| US10585405B2 (en) * | 2013-05-07 | 2020-03-10 | Snap-On Incorporated | Method and system of using an USB user interface in an electronic torque wrench |
| US9395257B2 (en) * | 2013-05-10 | 2016-07-19 | Snap-On Incorporated | Electronic torque tool with integrated real-time clock |
| WO2016062915A1 (en) * | 2014-10-23 | 2016-04-28 | Jukka Jokinen | Method for tightening a high-pressure pipe connection to a correct tightness and a device for carrying out the method |
| US9839998B2 (en) | 2015-04-07 | 2017-12-12 | General Electric Company | Control system and apparatus for power wrench |
| TWI605912B (en) * | 2016-06-07 | 2017-11-21 | Hou-Fei Hu | Torque wrench |
| US11034003B2 (en) * | 2016-12-02 | 2021-06-15 | Snap-On Incorporated | Holding tool |
| US20180169806A1 (en) * | 2016-12-16 | 2018-06-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Castle nut/cotter pin alignment electric tooling |
| US10738817B2 (en) | 2017-04-11 | 2020-08-11 | Turnasure Llc | Self-indicating direct tension indicator |
| US11524395B2 (en) * | 2018-04-10 | 2022-12-13 | Panasonic Intellectual Property Management Co., Ltd. | Signal processing apparatus and electric tool |
| US11752604B2 (en) | 2018-04-13 | 2023-09-12 | Snap-On Incorporated | System and method for measuring torque and angle |
| JP7436466B2 (en) * | 2018-09-21 | 2024-02-21 | アトラス・コプコ・インダストリアル・テクニーク・アクチボラグ | electric pulse tools |
| IT201900024742A1 (en) * | 2019-12-19 | 2021-06-19 | Atlas Copco Ind Technique Ab | Clamping tool with interchangeable arm. |
| US12136160B2 (en) | 2022-04-27 | 2024-11-05 | Snap Inc. | Augmented reality experience power usage prediction |
Family Cites Families (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3577815A (en) * | 1969-04-02 | 1971-05-04 | Pendleton Tool Ind Inc | Two-way torque wrench |
| US4026369A (en) * | 1975-10-06 | 1977-05-31 | Ingersoll-Rand Company | Yield torque apparatus |
| US4016938A (en) * | 1975-12-02 | 1977-04-12 | Ingersoll-Rand Company | Method for fastener tensioning |
| US4104778A (en) * | 1977-01-27 | 1978-08-08 | Ingersoll-Rand Company | Method and apparatus for fastener tensioning |
| US4106176A (en) * | 1977-04-06 | 1978-08-15 | Ingersoll-Rand Company | Method and apparatus for fastener tensioning |
| US4211120A (en) * | 1978-08-08 | 1980-07-08 | Sps Technologies, Inc. | Tightening apparatus |
| DE3128557A1 (en) * | 1981-07-18 | 1983-03-03 | Dr. Staiger, Mohilo + Co GmbH, 7060 Schorndorf | Method for monitoring screwing processes |
| DE8214536U1 (en) * | 1982-05-18 | 1982-10-14 | Eduard Wille Gmbh & Co, 5600 Wuppertal | DEVICE FOR TIGHTENING A SCREW CONNECTION, IN PARTICULAR TIGHTENING THROUGH THE STRETCH LIMIT, BY MEANS OF THE ROTATIONAL ANGLE CONTROL |
| DE3218928A1 (en) * | 1982-05-19 | 1983-11-24 | Robert Bosch Gmbh, 7000 Stuttgart | SCREW DEVICE |
| US4561332A (en) * | 1983-01-27 | 1985-12-31 | Repco Limited | Torque wrench |
| US4558601A (en) * | 1984-01-06 | 1985-12-17 | J. S. Technology, Inc. | Digital indicating torque wrench |
| JP2526075Y2 (en) * | 1990-10-13 | 1997-02-12 | ティアツク株式会社 | Torque Wrench |
| DE4039794A1 (en) * | 1990-12-13 | 1992-06-17 | Forst Saltus Werk | TORQUE WRENCH |
| IT1252121B (en) * | 1991-10-23 | 1995-06-05 | Usag Utensilerie S R L Gemonio | PROCEDURE AND DEVICE FOR CHECKING THE TIGHTENING ANGLE IN ELECTRONIC TORQUE WRENCHES. |
| SE470448B (en) * | 1992-08-25 | 1994-04-11 | Sandvik Ab | Tool with torque indication |
| GB2273574B (en) * | 1992-12-21 | 1995-11-29 | Daimler Benz Ag | Process and a device for the rotation-angle-monitored tightening or loosening of screw connections |
| JP3000185B2 (en) * | 1993-04-21 | 2000-01-17 | 株式会社山崎歯車製作所 | Bolt fastening method using impact wrench |
| US5526460A (en) * | 1994-04-25 | 1996-06-11 | Black & Decker Inc. | Impact wrench having speed control circuit |
| US5890406A (en) * | 1994-08-09 | 1999-04-06 | Jane Figueiredo | Electronic torque limiting and parts marking wrench |
| US5589644A (en) * | 1994-12-01 | 1996-12-31 | Snap-On Technologies, Inc. | Torque-angle wrench |
| US5581042A (en) * | 1995-12-11 | 1996-12-03 | Ingersoll-Rand Company | Method for torque wrench non-contact angle measurement |
| US5963707A (en) * | 1996-04-23 | 1999-10-05 | Kc Multi-Ring Products, Inc. | Method and apparatus for determining and adjusting torque in an electric impact torque wrench |
| DE19637067A1 (en) | 1996-09-12 | 1998-03-19 | Saltus Werk Max Forst Gmbh | Torque wrench |
| DE29724239U1 (en) * | 1996-09-12 | 2000-08-03 | Saltus-Werk Max Forst GmbH, 42659 Solingen | Torque wrench |
| EP0914910A1 (en) | 1997-10-30 | 1999-05-12 | Yukitaka Murakami | Wrenching method and apparatus wrenching attachment, and medium storing wrenching torque control program |
| US6070506A (en) | 1998-07-20 | 2000-06-06 | Snap-On Tools Company | Ratchet head electronic torque wrench |
| IT1312407B1 (en) | 1999-06-16 | 2002-04-17 | Blm S A S Di L Bareggi & C | IMPROVED TOOL FOR CLAMPING, WITH INTERCHANGEABLE INSERTS |
| US6119562A (en) | 1999-07-08 | 2000-09-19 | Jenkins; Bradley G. | Electromechanical releasing torque wrench |
| DE10137896A1 (en) * | 2001-08-02 | 2003-02-20 | Paul-Heinz Wagner | Method for tightening screws with power screwdriver prevents damage to screws and provides a high measure of accuracy and reproducibility in the screwing process |
| US6629055B2 (en) * | 2001-09-28 | 2003-09-30 | Spx Corporation | Apparatus and method for sensing torque angle |
-
2003
- 2003-10-09 CA CA2502695A patent/CA2502695C/en not_active Expired - Lifetime
- 2003-10-09 AU AU2003287041A patent/AU2003287041A1/en not_active Abandoned
- 2003-10-09 WO PCT/US2003/032033 patent/WO2004035267A1/en not_active Application Discontinuation
- 2003-10-09 GB GB0509843A patent/GB2409833B/en not_active Expired - Lifetime
- 2003-10-10 US US10/683,343 patent/US7082866B2/en not_active Expired - Lifetime
- 2003-10-16 TW TW092128715A patent/TWI321504B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| TW200416115A (en) | 2004-09-01 |
| GB2409833B (en) | 2006-09-13 |
| GB0509843D0 (en) | 2005-06-22 |
| WO2004035267A1 (en) | 2004-04-29 |
| US20050061119A1 (en) | 2005-03-24 |
| CA2502695A1 (en) | 2004-04-29 |
| AU2003287041A1 (en) | 2004-05-04 |
| WO2004035267A9 (en) | 2004-06-17 |
| TWI321504B (en) | 2010-03-11 |
| US7082866B2 (en) | 2006-08-01 |
| GB2409833A (en) | 2005-07-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2502695C (en) | Ratcheting torque-angle wrench and method | |
| AU2006318399B2 (en) | Torque-angle instrument | |
| EP1059145B1 (en) | Impact-driven rotating device | |
| US6698298B2 (en) | Torque wrench for further tightening inspection | |
| US5172616A (en) | Torque wrench | |
| EP1710051A2 (en) | Torque wrench | |
| JP2005118910A (en) | Impact rotary tool | |
| JPS5911428B2 (en) | Control devices available for tightening devices | |
| AU2024219879A1 (en) | Torque wrench with strain gauges | |
| JP5390226B2 (en) | Screw tightening device | |
| EP0779131B1 (en) | Method and apparatus for torque wrench non-contact angle measurement | |
| RU2367917C1 (en) | Method for measurement of torsion torque of threaded joint tightening and torque spanner for its realisation | |
| JP2001009750A (en) | Information offering method at screw fastening work time | |
| JP6433552B2 (en) | Tightening tool | |
| JP3373622B2 (en) | Impact wrench | |
| JP3368081B2 (en) | Fastening device | |
| JP6385221B2 (en) | Tightening tool | |
| KR101829666B1 (en) | Torque wrench having voltage detector, and driving method thereof | |
| JP2591480Y2 (en) | Bolt tightening device | |
| JPH0318138Y2 (en) | ||
| JP2004106075A (en) | Torque wrench | |
| JPS5914477A (en) | Method of measuring clamping torque and impact wrench |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20231010 |